ENHANCED COMFORT Featuring cushioning zones and O-ring compression band for superior comfort and a secure fit while running ADVANCED PROTECTION Featuring Lambertz-Nicholson Achilles tendon protector and heel and toe tip protectors to prevent injuries in sensitive areas OPTIMAL AIRFLOW The Airflow Ankle Pad and optimized Air-Conditioning Channel provide fresh air circulation and keep feet cool and dry Skin-friendly: breathable mesh provides heat regulation and prevents skin irritation and unpleasant odors HIGH PERFORMANCE MATERIALS Made from functional fibers and the latest X-BIONIC technologies for optimal heat regulation and foot protection